Finding the Third Proportional to 72,118 and 154,646

Step by Step Solution

1. Step 1: Write the proportion equation
   72,118 : 154,646 = 154,646 : x
2. Step 2: Convert to fraction form
   72,118/154,646 = 154,646/x
3. Step 3: Cross multiply
   72,118x = 154,646 × 154,646
4. Step 4: Simplify right side
   72,118x = 23,915,385,316
5. Step 5: Solve for x
   x = 23,915,385,316/72,118
6. Step 6: Final answer
   x = 331,614.65